Louis Lacharme, with a level and with local assistants, clearing a route through dense jungle in Panama for an interoceanic canal. Wood engraving by G. Vuillier.

Licence: Public Domain Mark

Credit: Louis Lacharme, with a level and with local assistants, clearing a route through dense jungle in Panama for an interoceanic canal. Wood engraving by G. Vuillier. Wellcome Collection. Source: Wellcome Collection.